Home / 31,574.12-43,564.40-18,149.20

Finding the Fourth Proportional to 31,574.12, 43,564.40 and 18,149.20

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Solution

The fourth proportional to 31,574.12, 43,564.40 and 18,149.20 is: 25,041.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,574.12 : 43,564.40 = 18,149.20 : x
  2. Step 2: Convert to fraction form
    31,574.12/43,564.40 = 18,149.20/x
  3. Step 3: Cross multiply
    31,574.12x = 43,564.40 × 18,149.20
  4. Step 4: Simplify right side
    31,574.12x = 790,659,008.48
  5. Step 5: Solve for x
    x = 790,659,008.48/31,574.12
  6. Step 6: Final answer
    x = 25,041.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.